When you hover over the arrows (left and right) on the cards you will notice a subtle movement in the direction that you are hovering.
This is a useful little animation of the entire timeline slightly moving in the desired direction.
![](https://ct.shindiristudio.com/wp-content/uploads/2019/09/09-Hover-Motion.jpg)
You can choose to remove this by de-selecting “Hover Motion” setting.